Search found 14 matches
- Fri Mar 17, 2017 1:53 pm
- Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
- Topic: (E)-But-2-en-1-ol
- Replies: 1
- Views: 1392
Re: (E)-But-2-en-1-ol
Because there is a double bond you need to identify the geometric isomer, being cis or tans.
- Fri Mar 17, 2017 1:51 pm
- Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
- Topic: Ring Flip
- Replies: 1
- Views: 470
Re: Ring Flip
The ring flip just two ways of drawing the chair conformation and it occurs with random collisions. Both have the same energy except when there are substituents. When this occurs there is one chair structure that is preferred based on the one that has the lower energy.
- Mon Mar 13, 2017 2:32 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagram and Pt(s)
- Replies: 4
- Views: 1062
Re: Cell Diagram and Pt(s)
You add Pt(s) when the reactants are any other phase than a solid so that there is something that can transfer the electrons as it is inert and will not participate in the chemical reaction.
- Mon Mar 13, 2017 2:27 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: A in the Arrhenius equation
- Replies: 2
- Views: 721
Re: A in the Arrhenius equation
A is also usually used when a catalyst or enzyme is discussed as that is the factor that gets affected when the enzyme positions a molecule in a certain way so that the reaction will occur.
- Tue Mar 07, 2017 3:45 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 29823
Re: Quiz 3 Winter 2017
Can someone explain when to use tert vs neo and sec vs iso please?
- Tue Mar 07, 2017 3:17 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 29823
Re: Quiz 3 Winter 2017
Julie Barreto 3A wrote:how would you draw out 2-butene or anything with a number in front of it ???
The 2 in two butene means that there is a double bond as it ends in "en" and the double bond is between Carbon 2 and 3.
- Sun Mar 05, 2017 9:35 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3663444
Re: Post All Chemistry Jokes Here
Why did the electron want to go to the party?
Because it was excited
Because it was excited
- Sat Feb 25, 2017 2:46 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3663444
Re: Post All Chemistry Jokes Here
What's wrong with a joke involving Cobalt, Radon, and Ytterium?
its CoRnY
its CoRnY
- Wed Feb 15, 2017 5:36 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Quiz Prep 1, #8
- Replies: 3
- Views: 586
Re: Quiz Prep 1, #8
For this question, you do not need to calculate any numbers. It is mainly asking for which of the following are state functions. You can get this from the question as it states that the temperature returns back to its original 298K, the volume returns back to V initial and the pressure returns back ...
- Fri Feb 10, 2017 12:54 pm
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Qualitative ways to find Entropy
- Replies: 3
- Views: 736
Re: Qualitative ways to find Entropy
You can also look at them through their structure and the statistical entropy for each through their degeneracy. This can be done by imagining that the molecules are cooled to 0K and seeing how many ways they can be at 0K to find their degeneracy.
- Fri Feb 03, 2017 5:48 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Electrolysis Application
- Replies: 2
- Views: 805
Re: Electrolysis Application
A real life example of electrolysis would be electroplating objects with chromium, nickel or gold jewelry.
- Fri Jan 27, 2017 10:30 am
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs Free Energy at during Phase Change
- Replies: 1
- Views: 424
Gibbs Free Energy at during Phase Change
The textbook mentions: "The Gibbs free energy of 1 mol H2O(l) must be the same as the Gibbs free energy of 1 mol H2O(s)." What is the reasoning behind this as the enthalpy for water is different as solid water and liquid water. Shouldn't this enthalpy difference correlate to a difference i...
- Sun Jan 22, 2017 12:42 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Textbook Problem 8.21
- Replies: 2
- Views: 581
Textbook Problem 8.21
I was wondering how to start this problem and if I do two separate equations for water and copper. A piece of copper of mass 20.0 g at 100.0 C is placed in a vessel of negligible heat capacity but containing 50.7 g of water at 22.0 C. Calculate the final temperature of the water. Assume that no ener...
- Mon Jan 16, 2017 6:14 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: By or On the System? [ENDORSED]
- Replies: 4
- Views: 1030
Re: By or On the System? [ENDORSED]
Work is either done ON the system by a force and thus the system would gain energy and if work is done BY the system it would lose energy and thus the internal energy of the system can be increased or decreased based on a net gain or net loss.